Evaluate: cos 15^ 0 & sin 15^ 0 sin 75^ 0 & cos 75^ 0 . - Vidyadip

Question

Evaluate: $ \begin{vmatrix} \text{cos 15}^{0}& \text{sin 15}^{0} \\ \text{sin 75}^{0} & \text{cos 75}^{0} \\ \end{vmatrix}$.

✓

Answer

Zero.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "1 Marks Question" from MATRICES→MATRICES — all question types→MATHS STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

Prove that: $\tan ^ { - 1 } \sqrt { x } = \frac { 1 } { 2 } \cos ^ { - 1 } \left( \frac { 1 - x } { 1 + x } \right) , x \in ( 0,1 ).$

Show that the number of equivalence relations on the set ${1, 2, 3}$ containing $(1, 2)$ and $(2, 1)$ is two.

Find the integral: $\int \frac{\sin x}{\sin (x+a)} d x$

Determine order and degree $($if defined$)$ of differential equation $\left(y^{\prime \prime \prime}\right)^{2}+\left(y^{\prime \prime}\right)^{3}+\left(y^{\prime}\right)^{4}+y^{5}=0$

Evaluate $\int_{1}^{2} \frac{x d x}{(x+1)(x+2)}$

Examine the function for continuity. $f(x) = |x – 5|$

Write the projection of the vector $\hat{\text{i}}-\hat{\text{j}}$on the vector $\hat{\text{i}}+\hat{\text{j}}$.

Find absolute maximum and minimum values of a function f given by $f(x)=12 x^{\frac{4}{3}}-6 x^{\frac{1}{3}}, x \in[-1,1]$

Assume that each born child is equally likely to be a boy or a girl. If a family has two children, what is the conditional probability that both are girls given that the youngest is a girl?

Construct a $2 \times 2$ matrix $A = [a_{ij}],$ whose element $a_{ij} = \frac{(i+2j)^{2}}{2}$.